Ganesh and his tusk
Re-reading yesterday's references to obstacles and magic made me look up above my head to my Ganesh mask (which came from Madras, if I remember correctly).
He has one broken-off tusk, as Ganesh always. The story of why is popular with British Museum visitors.
As I tell it: One day, after his elephant head and body had grown together (that's another story) he was sitting at the feet of a great sage (Vyasa), who started to tell him a story, which turned out to be the Mahabharata, "The Story of the Wars". Ganesh sighed and thought: 'I'm never going to remember all of this; it's much too long.' So he broke off his tusk and used the bloody end to write down the story.
That's why he's the god of writers - should you be needing any inspiration - as well as the "remover of obstacles".
More about Ganesh here and a useful-looking glossary here.